yeah I read the Russian version. I take a Screen shot of each page and put it into translate lol. warning, lots of math
jesus christ i almost had a heart attack when i saw AO-17A as a main gun because this is code name for GSh-30-2, but thankfully TKB-687 is a designation of GSh-30-1
Also it seems that Hungarian 9.12 is whole ass 73kg heavier than it should (at least according to statshark)
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imagine the recoil
Original Su-27 prototype was planned to have GSh-30-2, and even with that thing they changed the gun to GSh-30-1
